20502634 has 24 divisors (see below), whose sum is σ = 32986980. Its totient is φ = 9554112.

The previous prime is 20502631. The next prime is 20502641. The reversal of 20502634 is 43620502.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 20277009 + 225625 = 4503^2 + 475^2 .

It is not an unprimeable number, because it can be changed into a prime (20502631) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 52512 + ... + 52900.

Almost surely, 2^20502634 is an apocalyptic number.

20502634 is a deficient number, since it is larger than the sum of its proper divisors (12484346).

20502634 is a wasteful number, since it uses less digits than its factorization.

20502634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 502 (or 483 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 20502634 is about 4527.9834363655. The cubic root of 20502634 is about 273.6969049741.

The spelling of 20502634 in words is "twenty million, five hundred two thousand, six hundred thirty-four".